<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var arr = [[1, 2, 3], [3, 4, 5, 6]];
			console.log(arr)
		</script>
	</body>
</html>
